The Thermic Drilling of Concrete and Stone. Discussion on M. Maurice Lebrun's Paper

A joint meeting of the Institution of Structural Engineers and the British Section of the Societe des Ingenieurs Civils de France was held at 11 Upper Belgrave Street, London, S.W.1, on Thursday, 6th February, 1947, when a paper on “The Thermic Drilling of Concrete and Stone,” by M. Maurice Lebrun (translated by Mr. Peter Gerard), was presented.